Juice extractor



N u 4 Nu V. A 1 M m U m. m 5 w w 1 m m w 3E3; "w w n M E a. u m b 1 in??? 1 m f lan. 24, 1956 United States Patent JUICE EXTRACTOR Rema V. Kuehn, Portland, Oreg. Application September 25, 1953, Serial No. 382,408

Claims. (Cl. 210-1505) This invention relates generally to juice extractors and particularly to the extraction of juice from a mash by means of a partial vacuum especially for use in home operations.

The main object of this invention is to provide a simple and highly elficient means for removing the juice from a fruit mash without the usual loss of time when using the drip method commonly used by the home fruit uicer.

The second object is to save the maximum amount of juice without employing enough force to drive out small particles of fibrous matter through the screen into the juice saved.

I accomplish these and other objects in the manner set forth in the following specification as illustrated in the accompanying drawing, in which Fig. l is a vertical section through the device.

Fig. 2 is a horizontal section taken along the line 22 in Fig. 1.

Fig. 3 is a vertical section through the check valve taken along the line 33 in Fig. 2.

Fig. 4 is a fragmentary vertical section through the shut-off valve taken along the line 4-4 in Fig. 2.

Like numbers of reference refer to the same or similar parts throughout the several views.

Referring in detail to the drawing there is shown a juice receiver similar to the body of a pressure cooker, over which is placed a cover 11, which rests upon a gasket 12.

On the cover 11 are disposed the concentric cylinders 13 and 14. The cylinder 13 in this case is the same diameter as the receiver 10. The top 11 is secured to the receiver 10 by the removable clamps 11-A.

The cylinder 14 is spaced from the cylinder 13 and the space therebetween is a water well 15.

A water tube 16 extends downwardly from the top 11 to a point spaced close to the bottom 17 of the receiver 10. A check valve 18, shown in detail in Fig. 3, is mounted at the top of the tube 16 just as it opens through the top 11. This is preferably in the form of a ball check, which is secured to the top 11 by means of screws 18-A which pass through the flange 18-13 of the perforated valve cover 18-C.

Extending through and downwardly from the center of the top 11 is the juice extracting tube 19. The upper end of the tube 19 opens into the space within the lower end of the cylinder 14. A valve 20 forms a closure for the upper end of the tube 19. The valve 20 is secured by means of a screw 20-A to the flanged foot 20-B formed on the lower end of the screw 21, which is threaded in the standard 22 secured to the top 11 by means of the screws 22-A.

On the upper end of the screw 21 is a handle 23 by means of which the screw 21 can be turned. The purpose of the screw 21 is to control the valve 20.

Resting on a shoulder 24 on the standard 22 is a screen 25 whose outer edge is supported in a rim 26, which 2 rests on the inturned bead 27 formed on the inner wall of the cylinder 14.

Mash 28 is placed in the cylinder 14 above the screen 25. The valve 20 is closed by the handle 23 and water placed in the receiver 10. Heat is now applied to the bottom 17 and the water driven out through the tube 16 into the Water Well 15.

Heat is now removed from the receiver 10 and the pressure in the receiver 10 falls below that of the atmosphere. Now, when the valve 20 is raised by operating the handle 23, the fluid contents of the mash is drawn through the tube 19, leaving the juice 29 within the receiver 10.

By removing the clamps 11-A the entire top 11 and its attached parts can be lifted off of the receiver 10.

The residue of fibrous matter remains on the screen 25 with practically all of the juice extracted therefrom and this is accomplished in a fraction of the time normally required for this task.

I claim:

1. A liquid filter having in combination a juice receiver, a pressure-tight cover for said receiver, a water well on said cover having a check valve controlled tube connecting it with the lower portion of said receiver, said check valve preventing flow from said Well to said receiver, a mash receptacle on said cover having a screen forming a false bottom therefor, said mash receptacle having an imperforate side wall preventing the passage of liquid between said receptacle and said water well, a juice tube connecting the mash receptacle with said receiver, and a manually controlled valve for said juice tube.

2. A liquid filter having in combination a juice receiver adapted to be placed on a heating element, a removable pressure-tight cover for said receiver, said cover having a Water well and a mash holding receptacle disposed on the top thereof, a tube having a lower end spaced from the bottom of said receiver and an upper end extending through said cover into said water well, a check valve in said tube to prevent flow from said well to said receiver, a juice tube having its lower end spaced from the bottom of said receiver and its upper end opening into the bottom of said mash receptacle, a manually operated valve controlling said juice tube, and a screen forming a false bottom for said mash receptacle above said manually controlled valve.

3. A liquid filter comprising in combination a juice receiver having a pressure tight cover, a water well mounted on said cover having a check valve controlled tube in the bottom thereof extending into said receiver, said check valve preventing flow from said well to said receiver, a mash receptacle within said water well having a screen bottom spaced from said pressure tight cover, and a valve controlled juice tube extending through said cover connecting the bottom of said mash receptacle with the interior of said receiver.

4. A liquid filter comprising in combination a juice re ceiver having a pressure tight cover, a pair of concentric cylinders mounted on said cover, the inner cylinder forming a mash receptacle and the space between said cylinders forming a water well, a water tube connecting said water well with the lower portion of said receiver, a check valve in said water tube permitting the free movement of water in only one direction from said receiver to said well, a screen forming a false bottom for said mash receptacle spaced from said cover, and a valve controlled juice tube communicating between the space below said screen and the lower portion of said receiver.

5. A liquid filter comprising a juice receiver container having a pressure-tight cover adapted for the boiling of water at a pressure above atmospheric, a water Well on said cover having a valve controlled tube connecting said well with the lower portion of said receiver whereby the steam pressure of boiling Water in said covered receiver may be caused to transfer substantially all the water to said well leaving said receiver substantially filled with a steam atmosphere, a r'n'ash receptacle on said cover having a wall separating said receptacle from liquid communication with said well, a screen bottom in said receptacle, and a chamber beneath said screen bottom having a valve controlled port communicating through said cover with said juice receiver for drawing liquid from said mash receptacle by gravity and the suction created by a partial vacuum in said receiver when the receiver full of steam is cooled.

References Cited in the file of this patent UNITED STATES PATENTS List et al. Mar. 27, Bachelder Mar. 8, Smith Mar. 29, Weinberg Aug. 29, Schlumbdhm Oct. 15, Forschner Dec. 1,

FOREIGN PATENTS France Oct. 7, Great Britain of Switzerland Apr. 16, 

